As more venture capital investors turn their eye to disrupting the global insurance industry, annual funding to the insurance tech startups has already tripled in growth in 2015 year-to-date. But a handful of companies have amassed considerably bigger war chests than the rest. We used CB Insights data to highlight the five most well-funded insurance tech startups, below. Four of them are operating in the health insurance space, including software-enabled health insurance broker Zenefits, employer-provided insurance platform Collective Health, and tech-driven health insurer Oscar Health. Together, the five have raised $2.5B in aggregate funding to date.